Globe-valve



' (No Model.)

W." GURLETT.

I GLOBE VALVE. No. 543,128. Patented July 23 W Z n. w

eaqttarnuzgiv UNITED STATES.

PATENT OFFICE.

WILLIAM CURLETT, OF SAN FRANCISCO, CALIFORNIA.

GLOBE-VALVE.

SPECIFICATION forming part of' Letters Patent No. 543,128, dated July23, 1895. Application filed November 3, 1894. Serial No. 527,797. (Nomodel.)

To aZZ whom it may concern.-

Be it known that I, WILLIAM OURLETT, a

- citizen of the United States, residing at San Francisco, in the countyof San Francisco and State of California, have invented certain new anduseful Improvements in Globe-Valves; and I do declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

This invention relates to an improvement in globe-valves designed moreparticularly for garden use or irrigating purposes; and the novelty willbe fully understood from the following description and claims, whentaken in connection with the annexed drawings, in which- Figure l is avertical sectional view of my improved device. Fig. 2 is across-sectional View taken in the plane indicated by the dotted line :20won Fig. 1. Fig. 3 is a perspective view of the valve removed from theshell or casing, showing the parts in section; and Fig. 4 is a detailvertical sectional view of a modification.

Referring by letter to said drawings, A indicates the shell or casing,which comprises a base or lower sectiona anda top or upper section I).The base-section is of a form substantially as shown, having its lowerend internally screw-tapped, and its opposite orupper end, which isenlarged, is provided with an external screw-thread c, as shown. Thisbase-section is provided at diametrically-opposite points at its mouthor upper end with vertically-disposed guides or ways d, and at asuitable point below these guides is a narrow bridge or crossbar 6,which is provided with a central vertical aperture f, for a purposewhich will presently appear.

The upper section b is provided with an aperture g at its upper end,which extends through the body for the passage of the key or spindle ofthe valve, and at the base of this aperture gis an annular shoulder '5,against which a packing 2" is placed. The upper section is also providedwith a nozzle j, which may be externally screw-tapped, as shown at k,for the attachment of a hose or the like, and said upper section isfurthermore provided with a depending valve-seat Z, which is of anannular form.

B indicates the valve. This valve is of a form better shown in Fig. 3 ofthe drawings, being of a circular shape in outline, and is provided atdiametrically-opposite points with short arms or lugs C, which aredesigned to take into the ways or guides d of the lower section, seemsto be truly guided in a vertical manner. This valve is preferablyprovided in its engaging face with an annular groove D, which isdesigned to receive a gasket E, so as to form a tight joint when broughtagainst the seat Z. The valve, which is placed in the guides or ways ofthe base-section, is provided with a central depending stem F, whichpasses through the vertical aperture in the bridge or cross-bar e, and aspiral or other suitable spring G is interposed between the base of thevalve and said bridge or cross-bar and su rrounds the stem F. The valveis provided in its top with 'two inclined planes H and I. The planes arepitched in opposite directions, so that the highest point of one will bediametrically opposite the highest point of the other, bringing thelowest points in similar positions with respect to each other.

J indicates the key or stem of the valve. This stem or key, which passesthrough the aperture 9 of the upper section, is provided at a suitablepoint in its length with an annular shoulder K, which is designed tocontact with the shoulder 'Z of. the section b, with the packing ring orgasket interposed. The stem is provided at its upper end with a suitablehandle L, which may be held in position by a screw M, taking into ascrew-threaded aperture in the upper end of the stem, or other suitablemeans might be employed. The stem is broadened at its lower end andmaybe provided with a blunt chisel-edge N to engage the cam-surfaces ofthe inclined planes H.

'In Fig. 1 of the drawings I have shown the parts in position with thewater-way partly open. In the normal position, with the valve closed,the engaging end of the stem J is at the base of the cams or inclines H,when the force ofthe water below the valve, and also the actionof thespring aiding, will force the valve up to its seat Z, and effectivelyshut off the supply. To open the valve, it is simply necessary to turnthe stem or key so as to ride up the inclined planes. This will forcethe valve down away from the seat Z, thereby allowing the water orliquid to pass up around the valve and out through the dischargenozzle,the shoulder on the stem serving to prevent any leakage through thestem-aperture of the upper section, as said shoulder always remains incontact with the shoulder t of the valve-casing, whether thewater-supply has been opened or closed.

I have illustrated the cams or inclined planes as formed integral withthe valve, but I am aware that a block or disk bearing the cams may beformed from a separate piece and secured in a central recess of thevalve, and I am also aware that other changes and modifications might bemade in some of the parts, and therefore do not wish to be understood aslimiting myself to the details of construction which I have sospecifically described. The upper section b of the shell or casing isalso provided with an internally screw-tapped depending annular flangeP, which is designed to engage the threads 0 on the lower or basesection.

From the construction described it will be seen that should any of theparts become impaired or injured they can be quickly renewcd andreplaced by others, access being readily had to the interior of thevalve by simply screwing the two sections a and b apart.

In the modification illustrated in Fig. 4 of the drawings it will beseen that I dispense with the bridge or crossbar e and provide aninternal annular shoulder e to rest a bowed spring Z, which has anaperture for the passage of the stem of the valve, and surrounding thevalve-stem and bearing upon the bowed spring Z is a spiral or coiledspring G. In this modification I also dispense with the groove in theface of the valve and the gasket placed therein, and in lieu thereof Iprovide the ground valve-seat Z on the flange of the upper section, andI provide the valve with a double face 771., so as to tightly engage theseat 1. It will be observed that the planes H and I, both in themodification and in the main construction, have shoulders or stops Q attheir highest points, so as to limit the turning movement of the stem Jand prevent it from slipping off of the planes.

It is obvious that the sections of the casing may have the threads atthe connecting parts dilterently disposed. For instance, the lowersection may have the threads internally and the upper section have itsthreads externally, and suitable shoulders may be provided for washersor rings, and while I have described my invention as relating toglobe-valves for garden use, it can, with slight modifications, beadapted as a steam-valve, and it can be used on faucets for variouspurposes.

Having described my invention, what I claim is- 1. In a valve, thecombination of a shell or casing having a passage for a stem or key andalso having a valve-seat, a valve having the central depression and thetwo inclined planes II, I, arranged in said central depression, a springadapted to normally press and hold the valve against its seat, and thekey or stem having a blunt chisel edge engaging the inclined planes ofthe valve, substantially as and for the purpose set forth.

2. The herein described valve comprising the shell or casing having theopposite guides or ways 01, and also having a valve seat, the valvehaving lugs arranged and adapted to move in the guides or ways cl, andalso having a central depression and the inclined planes or cams II, I,arranged in said depression, a spring adapted to press and hold thevalve against its seat, and the key or stem having a blunt chisel edgeengaging the inclined planes II, I, of the valve and also having ashoulder to prevent leakage, substantially as specified.

In testimony whereof I aiiix my signature in presence of two witnesses.

WILLIAM CURLETT. Witnesses:

ROBERT MoELRoY, P. A. PIVDA.

